PCK2002 Datasheet | NXP Semiconductors

FEATURES - HIGH speed, LOW noise non-inverting 1- 18 buffer - Typically used to support four SDRAM DIMMs - Multiple VDD, VSS pins for noise reduction - 3.3 V operation - Separate 3-State pin for testing - ESD protection exceeds 2000 V per Standard 801.2 - Optimized for 66 MHz, 100 MHz and 133 MHz operation - Typical 175 ps skew outputs - Available in 48-pin SSOP and TSSOP packages - See PCK2002M for mobile (reduced pincount) 28-pin 1-10 buffer version - Spread spectrum pliant - Individual clock output enable/disable via I2C DESCRIPTION The PCK2002 is a 1- 18 fanout buffer used for 133/100 MHz CPU, 66/33 MHz PCI, 14.318 MHz REF, or 133/100/66 MHz SDRAM clock distribution. 18 outputs are typically used to support up to 4 SDRAM DIMMS monly found in desktop, workstation or server applications. All clock outputs meet Intel’s drive, rise/fall time, accuracy, and skew requirements. An I2C interface is included to allow each output to be enabled/disabled individually. An output disabled via the I2C interface will be held in the LOW state. In addition, there is an OE input which 3-States all outputs. QUICK REFERENCE DATA SYMBOL t PLH t PHL tr tf ICC PARAMETER Propagation delay BUF_IN to BUF_OUTn Rise time Fall time Total supply current CONDITIONS VCC = 3.3 V, CL = 30 p F VCC = 3.3 V, CL = 30 p F VCC = 3.3 V, CL = 30 p F VCC = 3.465 V TYPICAL 2.7 2.9 1.1 1.0 35 UNIT ns ns ns µA ORDERING INFORMATION PACKAGES 48-Pin Plastic TSSOP 48-Pin Plastic SSOP TEMPERATURE RANGE 0 to +70 °C 0 to +70 °C ORDER CODE PCK2002DGG PCK2002DL DRAWING NUMBER SOT362-1 SOT370-1 PIN CONFIGURATION RESERVED 1 RESERVED 2 VDD0 3 BUF_OUT0 4 BUF_OUT1 5 VSS0 6 VDD1 7 BUF_OUT2 8 BUF_OUT3 9 VSS1 10 VDD2 12 BUF_OUT4 13 BUF_OUT5 14 VSS2 15 VDD3 16 BUF_OUT6 17 BUF_OUT7 18 VSS3 19 VDD4 20 BUF_OUT16 21 VSS4 22 VDDI2C 23 SDA 24 48 RESERVED 47 RESERVED 46 VDD9 45 BUF_OUT15 44 BUF_OUT14 43 VSS9 42 VDD8 41 BUF_OUT13 40 BUF_OUT12 39 VSS8 38 OE PIN DESCRIPTION PIN NUMBER 4, 5, 8, 9 13, 14, 17, 18 31, 32, 35, 36 40, 41,...